Schulte et al reported a TNM classification for parathyroid carcinoma.
Patient selection: parathyroid carcinoma
Parameter
Finding
TNM Status
tumor growth
capsular invasion
T1
invasion of surrounding soft tissue excluding vital structures
T2
vascular invasion
T3
invasion of a vital structure
T4
metastases to regional lymph nodes
no tumor
N0
present
N1
distant metastases
none
M0
M1
where:
• invasion into a vital organ: hypopharynx, trachea, esophagus, recurrent laryngeal nerve, carotid artery)
TNM
Stage
T1 or T2, N0M0
I
T3 N0M0
II
any T, N1M0
III
T4 N0M0
any T, any N, M1
IV
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Specialty: Hematology Oncology
